Scalpel



FIG. 1 is a top view of a scalpel;

FIG. 2 is a bottom view of a scalpel;

FIG. 3 is a first side view of a scalpel;

FIG. 4 is a second side view of a scalpel;

FIG. 5 is a rear view of a scalpel;

FIG. 6 is a front view of a scalpel; and,

FIG. 7 is an upper perspective view thereof.

The broken lines shown in the drawings are included for the purpose of illustrating environmental structures and form no part of the claimed design. 

CLAIM The ornamental design for a scalpel, as shown and described. 